\begin{table}%T4
%\centering
\par
\caption{Basic information on the XMM-Newton HBSS sample.}\label{t4}
\begin{tabular}{lllrrrrl}
\hline
\hline
Name                 & Obs. ID    & RA; Dec (J2000)      & OffAxis  & Rate                     & {\it HR}2           & {\it HR}3            &  Class  \\
XBS...               &            &                      & arcmin     & $\times 10^{-3}$ cts/s    &               &              &      \\
(1)                  & (2)        & (3)                  & (4)       & (5)                       & (6)           & (7)            & (8)  \\
\hline
J002618.5+105019$^b$ & 0001930101 & 00 26 18.5 +10 50 19.3 &           9.56 &$  2.35 \pm        0.55 $& $\rm -0.53^{+  0.04 }_{-  0.04 }$ & $\rm -0.67^{+  0.06 }_{-  0.06 }$&~AGN1     \\
J013240.1$-$133307$^{b,e}$ & 0084230301 & 01 32 40.1 $-$13 33 07.8 &      11.90 &$  3.23 \pm    0.71 $& $\rm -0.02^{+  0.10 }_{-  0.10 }$ & $\rm -0.37^{+  0.11 }_{-  0.11 }$&~AGN2     \\
J013944.0$-$674909$^b$ & 0032140401 & 01 39 44.0 $-$67 49 09.4 &       2.69 &$  2.05 \pm    0.46 $& $\rm -0.50^{+  0.07 }_{-  0.07 }$ & $\rm -0.43^{+  0.13 }_{-  0.13 }$&~AGN1?    \\
J014100.6$-$675328$^b$ & 0032140401 & 01 41 00.7 $-$67 53 29.0 &       6.64 &$ 70.95 \pm    3.84 $& $\rm -0.45^{+  0.02 }_{-  0.02 }$ & $\rm -0.38^{+  0.03 }_{-  0.03 }$& star   \\
J015957.5+003309$^b$ & 0101640201 & 01 59 57.5 +00 33 09.7 &           9.56 &$  3.80 \pm        0.92 $& $\rm -0.63^{+  0.05 }_{-  0.05 }$ & $\rm -0.51^{+  0.10 }_{-  0.10 }$&~AGN1     \\
J021640.7$-$044404$^{b,e}$ & 0112371701 & 02 16 40.7 $-$04 44 04.9 &       9.35 &$  2.08 \pm    0.49 $& $\rm -0.72^{+  0.04 }_{-  0.05 }$ & $\rm -0.26^{+  0.13 }_{-  0.13 }$&~AGN1     \\
J021808.3$-$045845$^b$ & 0112371001 & 02 18 08.3 $-$04 58 45.7 &       2.26 &$  2.67 \pm    0.25 $& $\rm -0.65^{+  0.02 }_{-  0.02 }$ & $\rm -0.52^{+  0.04 }_{-  0.04 }$&~AGN1     \\
J021817.4$-$045113$^b$ & 0112371001 & 02 18 17.4 $-$04 51 13.3 &       9.58 &$  3.30 \pm    0.40 $& $\rm -0.48^{+  0.02 }_{-  0.03 }$ & $\rm -0.56^{+  0.04 }_{-  0.04 }$&~AGN1     \\
J021822.2$-$050615$^{a,b,d}$ & 0112371001 & 02 18 22.3 $-$05 06 15.7 & 8.48 &$ 4.54 \pm  0.43 $&  $\rm 0.65^{+  0.09 }_{-  0.09 }$ &  $\rm 0.40^{+  0.07 }_{-  0.07 }$&~AGN2     \\
J023713.5$-$522734$^b$ & 0098810101 & 02 37 13.5 $-$52 27 34.4 &      12.07 &$  3.23 \pm    0.61 $& $\rm -0.57^{+  0.03 }_{-  0.03 }$ & $\rm -0.58^{+  0.07 }_{-  0.06 }$&~AGN1    \\
J030206.8$-$000121$^b$ & 0041170101 & 03 02 06.9 $-$00 01 21.2 &      11.90 &$  3.10 \pm    0.42 $& $\rm -0.53^{+  0.03 }_{-  0.03 }$ & $\rm -0.46^{+  0.05 }_{-  0.06 }$&~AGN1     \\
J030614.1$-$284019$^b$ & 0042340501 & 03 06 14.2 $-$28 40 19.9 &      10.87 &$  4.61 \pm    0.92 $& $\rm -0.49^{+  0.05 }_{-  0.05 }$ & $\rm -0.35^{+  0.09 }_{-  0.09 }$&~AGN1     \\
J031015.5$-$765131$^b$ & 0122520201 & 03 10 15.6 $-$76 51 31.5 &       5.90 &$  4.39 \pm    0.46 $& $\rm -0.46^{+  0.03 }_{-  0.03 }$ & $\rm -0.53^{+  0.04 }_{-  0.04 }$&~AGN1     \\
J031146.1$-$550702$^b$ & 0110970101 & 03 11 46.1 $-$55 07 02.5 &      12.38 &$  5.87 \pm    1.12 $& $\rm -0.58^{+  0.05 }_{-  0.05 }$ & $\rm -0.39^{+  0.11 }_{-  0.11 }$&~AGN2    \\
J031859.2$-$441627$^{b,d}$ & 0105660101 & 03 18 59.3 $-$44 16 27.6 &  11.55 &$ 2.16 \pm   0.49 $& $\rm -0.21^{+  0.08 }_{-  0.08 }$ & $\rm -0.47^{+  0.10 }_{-  0.10 }$&~AGN1     \\
J033845.7$-$352253$^{a,b}$ & 0055140101 & 03 38 45.8 $-$35 22 53.4 &  10.49 &$ 2.37 \pm   0.36 $& $\rm -0.05^{+  0.12 }_{-  0.12 }$ &  $\rm 0.27^{+  0.11 }_{-  0.11 }$&~AGN2     \\
J040658.8$-$712457$^{a,b}$ & 0111970301 & 04 06 58.9 $-$71 24 57.7 &  12.55 &$ 3.41 \pm   0.68 $&  $\rm 0.39^{+  0.19 }_{-  0.19 }$ &  $\rm 0.20^{+  0.16 }_{-  0.16 }$&~AGN2    \\
J040758.9$-$712833$^{a,b}$ & 0111970301 & 04 07 59.0 $-$71 28 33.5 &  12.12 &$ 4.96 \pm   0.91 $&  $\rm 0.49^{+  0.17 }_{-  0.17 }$ &  $\rm 0.33^{+  0.13 }_{-  0.13 }$&~AGN2     \\
J041108.1$-$711341$^b$ & 0111970301 & 04 11 08.1 $-$71 13 41.1 &      10.52 &$  2.20 \pm    0.42 $& $\rm -0.53^{+  0.08 }_{-  0.08 }$ & $\rm -0.04^{+  0.16 }_{-  0.16 }$&~AGN1     \\
J050536.6$-$290050 & 0111160201 & 05 05 36.7 $-$29 00 50.8 &          12.43 &$  2.19 \pm        0.44 $& $\rm -0.27^{+  0.05 }_{-  0.05 }$ & $\rm -0.47^{+  0.07 }_{-  0.07 }$&          \\
J052108.5$-$251913$^e$ & 0085640101 & 05 21 08.5 $-$25 19 13.1 &           3.17 &$  2.11 \pm        0.55 $& $\rm -0.59^{+  0.05 }_{-  0.05 }$ & $\rm -0.55^{+  0.09 }_{-  0.09 }$&~AGN1     \\
J052128.9$-$253032$^a$ & 0085640101 & 05 21 28.9 $-$25 30 32.4 &      10.73 &$  3.08 \pm    0.88 $&  $\rm 1.00^{+  0.00 }_{-  0.17 }$ & $\rm -0.32^{+  0.15 }_{-  0.15 }$&          \\
J074202.7+742625 & 0123100101 & 07 42 02.7 +74 26 25.8 &              10.86 &$  3.38 \pm            0.49 $& $\rm -0.59^{+  0.03 }_{-  0.03 }$ & $\rm -0.28^{+  0.07 }_{-  0.07 }$&~AGN1     \\
J074312.1+742937 & 0123100101 & 07 43 12.1 +74 29 37.4 &               5.33 &$ 10.92 \pm            0.64 $& $\rm -0.61^{+  0.01 }_{-  0.01 }$ & $\rm -0.56^{+  0.02 }_{-  0.02 }$&~AGN1     \\
J080411.3+650906 & 0094400301 & 08 04 11.4 +65 09 06.2 &               9.49 &$  2.41 \pm            0.50 $&  $\rm 0.06^{+  0.09 }_{-  0.09 }$ & $\rm -0.51^{+  0.09 }_{-  0.09 }$&          \\
J083737.1+254751 & 0025540301 & 08 37 37.2 +25 47 51.1 &              10.61 &$  7.30 \pm            1.12 $& $\rm -0.47^{+  0.04 }_{-  0.04 }$ & $\rm -0.53^{+  0.06 }_{-  0.06 }$&~AGN1     \\
J083737.0+255151 & 0025540301 & 08 37 37.1 +25 51 51.2 &              12.25 &$  2.98 \pm            0.71 $& $\rm -0.34^{+  0.07 }_{-  0.08 }$ & $\rm -0.52^{+  0.10 }_{-  0.10 }$&~AGN2     \\
J091828.4+513931 & 0084230601 & 09 18 28.5 +51 39 31.3 &               6.92 &$  3.03 \pm            0.54 $&  $\rm 0.31^{+  0.09 }_{-  0.10 }$ & $\rm -0.39^{+  0.09 }_{-  0.09 }$&~AGN1     \\
J095218.9$-$013643 & 0065790101 & 09 52 19.0 $-$01 36 43.1 &          11.78 &$ 24.50 \pm        2.98 $& $\rm -0.77^{+  0.03 }_{-  0.03 }$ &  $\rm 0.41^{+  0.09 }_{-  0.09 }$&~AGN1    \\
J101850.5+411506 & 0028740301 & 10 18 50.6 +41 15 06.6 &              10.32 &$  2.16 \pm            0.49 $& $\rm -0.69^{+  0.03 }_{-  0.03 }$ & $\rm -0.51^{+  0.07 }_{-  0.08 }$&~AGN1     \\
J101922.6+412049 & 0028740301 & 10 19 22.6 +41 20 49.7 &               9.06 &$  2.46 \pm            0.47 $& $\rm -0.44^{+  0.04 }_{-  0.04 }$ & $\rm -0.58^{+  0.06 }_{-  0.05 }$&~AGN1     \\
J104026.9+204542 & 0059800101 & 10 40 26.9 +20 45 43.0 &               9.32 &$  8.70 \pm            1.15 $& $\rm -0.58^{+  0.03 }_{-  0.03 }$ & $\rm -0.48^{+  0.05 }_{-  0.05 }$&~AGN1     \\
J104522.1$-$012843 & 0125300101 & 10 45 22.1 $-$01 28 43.3 &          12.94 &$  3.00 \pm        0.67 $& $\rm -0.63^{+  0.04 }_{-  0.04 }$ & $\rm -0.46^{+  0.08 }_{-  0.08 }$&~AGN1     \\
J104912.8+330459 & 0055990201 & 10 49 12.8 +33 04 59.8 &              10.46 &$  2.06 \pm            0.51 $& $\rm -0.45^{+  0.06 }_{-  0.06 }$ & $\rm -0.54^{+  0.09 }_{-  0.10 }$&~AGN1?    \\
J110050.6$-$344331 & 0112880201 & 11 00 50.6 $-$34 43 32.0 &          12.71 &$  5.12 \pm        0.69 $& $\rm -0.48^{+  0.04 }_{-  0.04 }$ & $\rm -0.33^{+  0.07 }_{-  0.07 }$&          \\
J112026.7+431520$^a$ & 0107860201 & 11 20 26.7 +43 15 20.3 &           4.58 &$  2.32 \pm        0.37 $&  $\rm 0.67^{+  0.08 }_{-  0.08 }$ & $\rm -0.32^{+  0.09 }_{-  0.09 }$&~AGN2     \\
J113106.9+312518 & 0102040201 & 11 31 07.0 +31 25 18.2 &              11.18 &$  2.27 \pm            0.44 $& $\rm -0.53^{+  0.08 }_{-  0.08 }$ & $\rm -0.15^{+  0.14 }_{-  0.14 }$&~AGN1     \\
J113121.8+310252 & 0102040201 & 11 31 21.8 +31 02 52.6 &              11.58 &$  3.88 \pm            0.69 $& $\rm -0.03^{+  0.07 }_{-  0.07 }$ & $\rm -0.35^{+  0.08 }_{-  0.08 }$&~AGN2     \\
J113148.7+311358 & 0102040201 & 11 31 48.7 +31 13 58.8 &               8.45 &$  3.43 \pm            0.48 $&  $\rm 0.10^{+  0.06 }_{-  0.07 }$ & $\rm -0.43^{+  0.07 }_{-  0.07 }$&~AGN2      \\
J122656.5+013126 & 0110990201 & 12 26 56.6 +01 31 26.2 &               5.85 &$  3.07 \pm            0.54 $& $\rm -0.11^{+  0.09 }_{-  0.09 }$ & $\rm -0.34^{+  0.10 }_{-  0.10 }$&~AGN2?    \\
J123600.7$-$395217 & 0006220201 & 12 36 00.7 $-$39 52 18.0 &           5.62 &$  2.66 \pm        0.29 $& $\rm -0.77^{+  0.01 }_{-  0.01 }$ & $\rm -0.77^{+  0.02 }_{-  0.02 }$& star     \\
J124641.8+022412 & 0051760101 & 12 46 41.8 +02 24 12.1 &               2.78 &$  2.22 \pm            0.49 $& $\rm -0.58^{+  0.05 }_{-  0.05 }$ & $\rm -0.48^{+  0.09 }_{-  0.09 }$&~AGN1     \\
J132038.0+341124 & 0093640401 & 13 20 38.1 +34 11 24.3 &               3.10 &$  2.89 \pm            0.40 $& $\rm -0.43^{+  0.04 }_{-  0.04 }$ & $\rm -0.48^{+  0.06 }_{-  0.06 }$&~AGN1     \\
J133942.6$-$315004 & 0035940301 & 13 39 42.6 $-$31 50 04.8 &          11.91 &$  3.52 \pm        0.51 $& $\rm -0.36^{+  0.05 }_{-  0.06 }$ & $\rm -0.20^{+  0.08 }_{-  0.08 }$&~AGN1?    \\
J134656.7+580315$^a$ & 0112250201 & 13 46 56.7 +58 03 15.4 &          11.08 &$  3.33 \pm        0.56 $&  $\rm 0.46^{+  0.10 }_{-  0.10 }$ & $\rm -0.09^{+  0.10 }_{-  0.10 }$& GAL        \\
J134749.9+582111 & 0112250201 & 13 47 49.9 +58 21 11.0 &               8.53 &$  7.39 \pm            0.66 $& $\rm -0.60^{+  0.02 }_{-  0.02 }$ & $\rm -0.54^{+  0.03 }_{-  0.03 }$&~AGN1     \\
J140102.0$-$111224 & 0109910101 & 14 01 02.0 $-$11 12 24.3 &           9.27 &$  7.21 \pm        0.59 $& $\rm -0.52^{+  0.02 }_{-  0.02 }$ & $\rm -0.46^{+  0.03 }_{-  0.03 }$&~AGN2?   \\
J140113.4+024016$^a$ & 0098010101 & 14 01 13.4 +02 40 17.0 &          12.78 &$  2.10 \pm        0.52 $& $\rm -0.55^{+  0.09 }_{-  0.09 }$ &  $\rm 0.08^{+  0.16 }_{-  0.16 }$&          \\
J140127.7+025605 & 0098010101 & 14 01 27.7 +02 56 05.4 &               7.25 &$  6.66 \pm            0.62 $& $\rm -0.38^{+  0.02 }_{-  0.02 }$ & $\rm -0.53^{+  0.04 }_{-  0.04 }$&~AGN1     \\
J141531.5+113156 & 0112250301 & 14 15 31.6 +11 31 56.2 &               4.15 &$  2.58 \pm            0.34 $& $\rm -0.55^{+  0.03 }_{-  0.03 }$ & $\rm -0.47^{+  0.06 }_{-  0.06 }$&~AGN1     \\
J141830.5+251052$^c$ & 0109960101 & 14 18 30.5 +25 10 52.6 &               7.58 &$  7.70 \pm            1.20 $& $\rm -0.52^{+  0.04 }_{-  0.04 }$ & $\rm -0.65^{+  0.07 }_{-  0.07 }$& CL       \\
J142741.8+423335$^a$ & 0111850201 & 14 27 41.9 +42 33 35.8 &          11.45 &$  3.62 \pm        0.53 $&  $\rm 0.48^{+  0.07 }_{-  0.07 }$ & $\rm -0.23^{+  0.07 }_{-  0.07 }$&          \\
J143835.1+642928 & 0111530101 & 14 38 35.1 +64 29 28.3 &              12.34 &$  3.57 \pm            0.54 $&  $\rm 0.18^{+  0.07 }_{-  0.07 }$ & $\rm -0.37^{+  0.07 }_{-  0.06 }$&~AGN1?    \\
\hline
J143911.2+640526$^a$ & 0111530101 & 14 39 11.2 +64 05 26.8 &          12.04 &$  2.44 \pm        0.39 $&  $\rm 0.86^{+  0.09 }_{-  0.09 }$ &  $\rm 0.29^{+  0.11 }_{-  0.11 }$& BL?     \\
J153452.3+013104$^e$ & 0112190401 & 15 34 52.4 +01 31 04.6 &              10.57 &$  8.36 \pm            1.30 $& $\rm -0.39^{+  0.04 }_{-  0.04 }$ & $\rm -0.55^{+  0.05 }_{-  0.05 }$&~AGN1     \\
J160645.9+081525 & 0067340601 & 16 06 46.0 +08 15 25.1 &              12.61 &$  7.36 \pm            1.37 $&  $\rm 0.81^{+  0.08 }_{-  0.08 }$ & $\rm -0.23^{+  0.10 }_{-  0.10 }$&~AGN2?    \\
J161820.7+124116$^a$ & 0103461001 & 16 18 20.7 +12 41 16.3 &          11.56 &$  2.09 \pm        0.61 $&  $\rm 0.11^{+  0.18 }_{-  0.18 }$ & $\rm -0.18^{+  0.18 }_{-  0.19 }$&          \\
J165425.3+142159 & 0113070101 & 16 54 25.4 +14 21 59.3 &               7.44 &$  5.26 \pm            1.08 $& $\rm -0.63^{+  0.03 }_{-  0.03 }$ & $\rm -0.61^{+  0.07 }_{-  0.07 }$&~AGN1     \\
J165448.5+141311 & 0113070101 & 16 54 48.5 +14 13 11.6 &              12.71 &$  6.25 \pm            1.79 $& $\rm -0.54^{+  0.07 }_{-  0.07 }$ & $\rm -0.42^{+  0.13 }_{-  0.13 }$&~AGN2     \\
J193248.8$-$723355$^b$ & 0081341001 & 19 32 48.8 $-$72 33 55.2 &       8.39 &$  4.47 \pm    0.73 $& $\rm -0.23^{+  0.08 }_{-  0.08 }$ & $\rm -0.08^{+  0.10 }_{-  0.10 }$&~AGN2?    \\
J204043.4$-$004548$^b$ & 0111180201 & 20 40 43.5 $-$00 45 48.2 &      10.55 &$  3.24 \pm    0.80 $&  $\rm 0.04^{+  0.11 }_{-  0.11 }$ & $\rm -0.35^{+  0.12 }_{-  0.12 }$&~AGN2     \\
J205635.7$-$044717$^b$ & 0112190601 & 20 56 35.8 $-$04 47 17.9 &       9.96 &$  2.08 \pm    0.50 $& $\rm -0.65^{+  0.04 }_{-  0.05 }$ & $\rm -0.48^{+  0.11 }_{-  0.11 }$&~AGN1     \\
J205829.9$-$423634$^b$ & 0081340401 & 20 58 30.0 $-$42 36 35.0 &       2.42 &$  3.91 \pm    0.56 $& $\rm -0.57^{+  0.03 }_{-  0.03 }$ & $\rm -0.47^{+  0.06 }_{-  0.06 }$&~AGN1    \\
J213002.3$-$153414$^b$ & 0103060101 & 21 30 02.3 $-$15 34 14.1 &      12.83 &$  2.30 \pm    0.47 $& $\rm -0.65^{+  0.04 }_{-  0.04 }$ & $\rm -0.50^{+  0.09 }_{-  0.09 }$&~AGN1     \\
J213820.2$-$142536     & 0092850201 & 21 38 20.2 $-$14 25 37.0 &      11.17 &$  2.80 \pm    0.59 $& $\rm -0.29^{+  0.07 }_{-  0.07 }$ & $\rm -0.45^{+  0.10 }_{-  0.10 }$&~AGN1     \\
J214041.4$-$234720$^b$ & 0008830101 & 21 40 41.5 $-$23 47 20.1 &       9.80 &$  3.30 \pm    0.68 $& $\rm -0.57^{+  0.05 }_{-  0.05 }$ & $\rm -0.39^{+  0.10 }_{-  0.10 }$&~AGN1     \\
J220601.5$-$015346$^b$ & 0012440301 & 22 06 01.5 $-$01 53 47.0 &      12.92 &$  2.26 \pm    0.55 $& $\rm -0.41^{+  0.06 }_{-  0.06 }$ & $\rm -0.41^{+  0.09 }_{-  0.09 }$&~AGN1     \\
\hline
\end{tabular}
\medskip
Columns are as follows: (1) Source name;
(2) XMM-Newton Observation number; (3) Right Ascension and Declination
(J2000) of the source (X-ray position); (4) Angular distance (in
arcmin) between the source and the MOS2 image center; (5) Source
count rate, and $1\sigma$ error, in the 4.5$-$7.5~keV energy band
(units of $10^{-3}$ cts/s). In Table 1 we have
reported the MOS2 conversion factors between the 4.5$-$7.5~keV count
rate and the flux as a function of the energy spectral index, the
hardness ratio {\it HR}2 and the blocking filter; (6) and (7) Hardness
ratios computed as described in Sect.~3.3. The errors on the
hardness ratios have been evaluated using simulations and
correspond to $1\sigma$; (8) Optical spectroscopic classification
(AGN1: broad line~AGN;~AGN2: narrow line~AGN; GAL: Optically Normal
Galaxy; CL: Cluster of Galaxies; BL:~BL~Lac~Object; star: star;
?: Tentative classification; see Sect.~3.2 for details).
\par
NOTE -- $^a$ These 11 sources belong to the HBSS sample but not to
the BSS sample, while the remaining 56 HBSS sources are present
also in the BSS sample.
\par
$^b$ A detailed X-ray and optical spectral analysis of these
sources have been reported in Caccianiga et~al. (2004).
\par
$^c$ These sources are more extended than the XMM-Newton EPIC MOS2 Point 
Spread Function at their off-axis angle.
Count rates have been evaluated using aperture photometry.
\par
$^d$  A detailed X-ray and optical spectral analysis of these
sources have been reported in Severgnini et~al. (2003).
\par
$^e$  A detailed X-ray spectral analysis of these
sources have been reported in Galbiati et~al. (2004).
\par
\end{table}